1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (C) 2009 Lemote Inc.
4 * Author: Wu Zhangjin, wuzhangjin@gmail.com
5 */
6
7#include <linux/memblock.h>
8#include <asm/bootinfo.h>
9#include <asm/traps.h>
10#include <asm/smp-ops.h>
11#include <asm/cacheflush.h>
12#include <asm/fw/fw.h>
13
14#include <loongson.h>
15
16/* Loongson CPU address windows config space base address */
17unsigned long __maybe_unused _loongson_addrwincfg_base;
18
19static void __init mips_nmi_setup(void)
20{
21 void *base;
22
23 base = (void *)(CAC_BASE + 0x380);
24 memcpy(base, except_vec_nmi, 0x80);
25 flush_icache_range(start: (unsigned long)base, end: (unsigned long)base + 0x80);
26}
27
28void __init prom_init(void)
29{
30#ifdef CONFIG_CPU_SUPPORTS_ADDRWINCFG
31 _loongson_addrwincfg_base = (unsigned long)
32 ioremap(LOONGSON_ADDRWINCFG_BASE, LOONGSON_ADDRWINCFG_SIZE);
33#endif
34
35 fw_init_cmdline();
36 prom_init_machtype();
37 prom_init_env();
38
39 /* init base address of io space */
40 set_io_port_base((unsigned long)
41 ioremap(LOONGSON_PCIIO_BASE, LOONGSON_PCIIO_SIZE));
42 prom_init_memory();
43
44 /*init the uart base address */
45 prom_init_uart_base();
46 board_nmi_handler_setup = mips_nmi_setup;
47}
48

source code of linux/arch/mips/loongson2ef/common/init.c